Concrete-mixer.



No. 863,775. PATBNTBD AUG. 20,1907. P. W. BLAKVESLEE. CONCRETE MIXER.

APPLICATION FILED IDEO` 22.1904.

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FIG.1. /z j /z /5 /2 '5 Suva/ulb@ N. 863,775.v I PATBNTED AUG. 2o, 1907. P. W. BLAKESLEE.

CONCRETE MIXER.

A'PPLIOATION HLBUDBO. zz. 1904.

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51 l n uan-tez FRANK BLAKESLEE, OF ASHTABULA, OHIO.

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Specification of Letters Iiiatent.4

Patented Aug. 2o, 1907.

Application tiled December `22, 1904. Serial Nv- 237.992.

To all whom it may concern:

Be it known that I, FRANK W. BLAKES'LEE, a citizen of the United States, residing at Ashtabula, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Concrete# v Mixers, of which the following is a specification.

My invention relates to concrete mixers and, has for its object to provide a device which will produce the maximum admixture with a minimum expenditure of labor. i

The -principal 'object of my invention is to produce l a concrete mixer especially adapted for mixing small quantities of material or for mixing material lwhere the demand though continuous requires but a. limited supply. l

With these and other objects in view, the present invention consists in the combination and arrangement of parts as will be hereinafter more fully described, shown in the accompanying drawings and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size and.

` minor details may be made, Within the scope of the claims, without departing from the spirit or sacrificing any of the advantages f the invention.

In the drawings: Figure 1 is a view of my improved concrete mixer in side elevation. end elevation of my improved concrete mixer. Fig. 3 is a vertical sectional view taken on line 3-3 of Fig. 1. Fig. 4 is a developed plan view on a reduced scale of the inner peripheral surface of the mixer, with parts broken away, showing the relative arrangement of the plates constituting the baffling wing, and which aids in the thorough admixture of the ingredients upon the rotation of the casing.

Like characters of reference designate corresponding parts throughout the several views.

In its preferred embodiment, my improved concrete mixer consists of a cylindrical hollow casing l, with lts opposite ends closed by the heads 2. The casing 1 is mounted to rotate upon trunnions 3, disposed centrally of the head 2, and journaled in bearings 4, mounted upon a frame 5. For convenience of transportation, thc mixer may be mounted upon wheels 6, secured to frame 5, and provided with any convenient means for attaching a motive power as the tongue 7, and to which a leg 8, may be attached to hold the mixer in an opera.- tive position.

Rigidly secured to the inner peripheral surface of the casing are a series of pairs of baffle or guide plates 9 extending from the ends or heads 2 in an oblique direction, but terminating at a point a short distance from an approximately central line upon the innerperipheral surface of the casing and in the direction of its longitudinal dimension as illustrated in Fig. 4. A second series of baille or guide plates l0 are rigidly secured to the inner peripheral surface of the casing, the said Fig. 2 is a view inV plates alternating with earch pair of bae or guide plates 9 as shown in Fig. 4. The plates l0 converge inwardly to form conjointly an angular baffling wingand the meeting ends thereof present their angle inrentrant disposition in the space left between the inwardly disposed ends of the plates 9, said angle being located -upon a. line approximately central of` the inner peripheral surface of the casing and in the directionof its longitudinal' dimension and the Wings extending obliquely therefrom toward but stopping short of the ends or heads 2 of saidV casing. Each of the baille plates 9 are preferably in alinement with one wing of the baffle plates 10, but separated therefrom as shown.

To permit the introduction of material into the casing,

. an opening in one side is provided and a closure l1 s'e-A- cured in any desired operative manner thereto as by the hinges 12 and held in a closed position by any approved fastening as 13. f

To rotate the casing, a crank-arm 14 may be provided 7 5 I secured directly to one of the trunnions 3 or through the medium of gears 15 and 16 and mounted in a bracket 17. Any approved device for holding the casing in a. desired position may be applied as the catch 18.

The operation of my improved concrete mixer is as follows: -With the rotating casing disposed as shown, the closure 11 may be opened as shown in Fig. 2 and the material to be mixed, may be introduced into the casing. The closure 11 may then be closed and the casing rotated by the manipulation of the crank 14. The rotation of the casing 1 will cause the material to be thrown as indicated by the arrows inFig. 4 outwardly from themiddleand towards and against the ends 2 and .ing thereby the desired admixture'. The throwingo the material from the ends toward the middle, lwill cause the" material from either end to cross over and through the material from the other end, .thus producing a mixing of great efficiency. When the material has been sufficiently mixed, the catch 13 may be loosened and the casing rotated to a. point bringing the closure 11 to the under side when the contained material will drop out by its own weight and the mixer be in con- 1 00 dition to receive another charge;

For certain purposes, it is lound desirable to mix the several dry ingredients without'the addition of water while in other cases, it is found desirable to add the water before mixing and mix the materials in a wet state. It is obvious that my improved mixer will mix equally well materials in either condition.

While I have shown the casing 1 as cylindrical in form, it is obvious that the said casing may be enf larged at its middle in the form of a barrel and that the said casing'may be made from any desired material as metal or wood and that other changes may be made from the torni shown and described without departing lrom the spirit ot' my invention or the scope of the claims.

Having vully described my invention I claim:

1. A concrete mixer comprising a rotatably mounted cylindrical casing, having; two series of alternately arirangcd baille plates disposed upon the inner peripheral surface of the casing'thc plates of one series extending from the ends of the 'casing in an oblique direction, but terminating ai: a point a short distance from an approxil mately central line upon the inner'peripheral surface of the casing and in the direction of its longitudinal dimension and the Vplates of the other series 'comprising angularly disposed wings, the angle formed by the said wings being located upon an approximately central line following; the direction of the longitudinal dimension of the peripheral snriace of the casing and the said wings extendingy therefrom obliquely toward but stopping short of the ends ot' thc said casing` 2. A ,concrete mixer comprisiupr a hollow cylindrical casing.;l mounted for rotation about its longitudinal axis, V-shape baille or guide platesmounted transversely on the inner peripheral surface ofthe said casing and extending in an obliquo direction from an approximately central line following the direction of the longitudinal dimension ot' the inner peripheral surface of the casing, but terminatingr a short distance from the ends of said casing and oppositely larranged'-V-shaped baille or guide plates extending obliqnely from the ends ot' the said casing adjacent to but terminating a short distance from said approximately central lline.

Il. A concrete mixer comprising a rotatably mounted cylindrical casing, havim,r two series of alternately arranged baille plates disposed upon the inner peripheral surface oi the casing. the plates ot' one series extending' from the ends of the casing" in an oblique direction but terminating .t a point a short distance from an approximately central line upon the inner peripheral surface of the casing andin the direction of its longitudinal dimension, the said plates being arranged to dcllect material contained within the casing: toward the said central line upon the rotation ot' the casing in one direction and the plates ol the other series extending from the said central line opposil'ely and ohlouely toward but stopping short of the ends -ot thecasing, said plates being arranged to deflect material contained within the casing toward the said ends upon the rotation ot' the casing in the same direction.

4. A concrete mixer comprising; a rotatably mounted casing, a series ot' bathing wings extending inwardly from the ends ot said casing', the ends of said wings being in spaced relation, Aso that a passage is left therebetween, a 'second series of wings arranged severally in alternate relation to said first named series` the wings of said se@ Zing series. having their free ends terminating a short distance from the ends of the casing, so that a passage is left between said wings and said ends ot' the casing, thc wings of both of said series severally having the uninterrupted spaces therebetween in their alternate relation and in communication with said passages.

5. A concrete mixer comprisingr a rotatably mounted casing, a series of bailling wings extending inwardlj.Y ironi the ends ot said easing, the ends of said wings, being in spaced relation, so that a pasK 'e is letft therebetween, a second series of angular \vin;.,s arranged severally in alternate relation to said tirst named series, the wings of said second series presenting their angle to said passage, and having;- their free ends terminatingl a short distance `fromihe ends of the casing, so that a passage is left be- 'tween said' wings and said ends o1` the casing, said wings having uninterrupted spaces therebetween in their alternate relation, said spaces being in communication with both of said pa gesrwhereby said passages and spaces coope ate to forlnan uninterrupted tortuous passage, cxtendinp; peripherally throughout the inner surface of the casing.

6. A concrete mixer comprising a rotatably mounted cylindrical casing and bailling, wings carried upon the inner circumferential surface ot' saidcasing, said wings being so arranged as to altord on each sido of the easing an uninterrupted zigzag passage eoniornntbleavith and haring uninterrupted communication with the opposing passage at points between the adjacent wings and along a line, periphcrally central ot` the casing.

ln testimony whereof l`ailix my signature in presence of two witnesses.

FRANK i W. BLA KllSLEE. 

